If you experience persistent audio lag or low volume even after an update, it may be time to upgrade to a newer hardware iteration that features Bluetooth 5.0+, which offers vastly superior range, instant pairing, and higher audio fidelity.
The official Bovee/ViseeeO firmware update tools are executable ( .exe ) files built for Windows operating systems. bovee tune2air firmware update
Connect the adapter to your Windows PC using your USB data cable. If you experience persistent audio lag or low
Follow these steps carefully to flash the new firmware onto your Bluetooth adapter. Step 1: Request the Official Firmware Files which offers vastly superior range